Car-brake.



- It. MOGLOSKEY.

GAR BRAKE.

APPLICATION FILED JANJ31, 1911.

.989;79Q. Patented Apr. 18, 191-1.

RILEY MCCLOSKEY, OF CARNEYVILLE, WYOMING.

CAR-BRAKE.

To all whom it may concern:

Be it known that I, RILEY MOCLOSKEY, a citizen of the United States,residing at Carneyville, in the county of Sheridan and State of Wyoming,have invented a new and useful Car-Brake, of which the following is aspecification.

This invention relates to brakes particularly designed for use upon minecars and especially to apparatus for applying the brake shoes to thewheels of the car, said apparatus including wedging means connected tothe shoes in a novel manner and exerting a powerful leverage upon theshoes so as to insure the application of the shoes to the wheels withany desired degree of pressure.

A further object is to provide means whereby the shoes are held againstlateral displacement relative to their actuating means.

Wit-h the foregoing and other objects in view the invention consists inthe combination and arrangement of parts and in the details ofconstruction hereinafter described and claimed, it being understood thatchanges in the precise embodiment of invention herein disclosed can bemade within the scope of what is claimed without departing from thespirit of the invention.

In the accompanying drawings the preferred form of the invention hasbeen shown.

In said drawings,-Figure 1 is a side elevation of a portion of a carhaving the present improvements applied thereto. Fig.2 is a bottom planview of the parts shown in Fig. 1. Fig. 3 is an end elevation of the carand showing the operating lever and the parts connected thereto. Fig. 4:is an enlarged view partly in side elevation and partly in section ofthe shoes and adjacent parts. Fig. 5 is a section on line AB Fig. 4, thebrake shoe being shown in elevation.

Referring to the figures by characters of reference 1 designates the carbody 'of the usual or any preferred type and the supporting wheels havebeen designated at 2, these wheels being arranged in pairs, one pairbeing located at each side of the car and the wheels of each pair beingclose together.

Secured to each side of the car and at one side of the space between thewheels is a bracket 3 having an outstanding portion 1 provided withoppositely projecting sup- Specification of Letters Patent.

Application filed January 31, 1911.

Patented Apr. 18, 1911. Serial No. 605,786.

porting pins 5. Each of these pins is loosely engaged by an ear 6extending laterally from the upper portion of an arm 7, said arm beingpreferably formed integral with, and extending upwardly from a brakeshoe 8. This brake shoe is formed with an arouate working face designedto fit snugly against the periphery of one of the wheels 2, and formedupon the opposite face of each shoe is an enlargement 9 having anelongated groove 10 extending upwardly therein.

The grooves 10 receive opposite portions of a cam 11 located at thelower end of the lever 12, this lever being pivotally mounted upon abolt 13 which, in turn, is connected to the bottom of the car body 1 bymeans of a short chainl i or the like. The upper end of the lever 12 isformed with a head 15 having a series of openings 16 any one of which isdesigned to receive a stud 17 ex tending laterally from a rod 18, saidstud being held within the aperture by a cotter pin or the like. Theother end of the rod 18 is pivotally attached to a bell crank lever 19mounted upon one corner portion of the car body and connected, as bymeans of a rod 20, to an actuating lever 21. This last lever isfulcrumed upon the end portion of the car and has any suitable means,such as a toothed segment 22 for engaging it and holding it in anyposition to which it may be moved.

It is of course to be understood that one set of brake shoes is locatedat each side of the car and that both sets are connected in the mannerhereinbefore described, to the operating lever 21.

Each cam 11 is so shaped that, when the lever 12 is pushed in onedirection by means of the mechanism provided for that purpose, the shoes8 are permitted to hang freely from the projection 5 and withoutfrictionally engaging the wheels 2 to such an extent as to retard theirmovement. When, however, the lever 12 is shifted in the other direction,the cam 11 acts as a spreading or wedging means and works within thegrooves 10 so as to force the shoes 8 in opposite directions andtightlyagainst the peripheries of the wheels. The degree of pressure isof course regulated by the amount of movement of the lever 12. Asopposite portions of the cam project into the grooves 10, it will beapparent that said cam and the grooved extensions 9 thus cooperate toprevent the shoes from becoming displaced laterally with relation to thelever 12 and the cam 11. Moreover as the shoes become worn, others canvbe readily substituted therefor without the necessity of replacing thecam or any of the other parts of the operating mechanism. By providingthe flexible connection between the car body and the pivot of the lever12, any necessary bodily movement of the lever and cam is permitted,thus insuring the application of both brake shoes with desired degreesof pressure and irrespective of any difference in the diameters of thewheels to which they are applied.

While the present improvements have been shown and described inconnection with a mine car it is to be understood that they may be usedin connection with various other structures.

What is claimed is 1. The combination with a structure and supportingwheels, of brake shoes loosely suspended between the wheels, a caminterposed between and engaging the shoes, a pivot device extending intothe cam, a loose connection between the device and the structure, andmeans for shifting the cam to simultaneously shift the shoes in oppositedirections.

2. The combination with a structure and supporting wheels, of brakeshoes loosely suspended between the wheels, a spreading cam interposedbetween the shoes, grooved extensions upon the shoes for engagement bythe cam to hold the shoes against lateral displacement relative to thecam, and means for actuating the cam.

3. The combination with a structure and supporting wheels, of brakeshoes suspended between the wheels, a spreading cam interposed betweenthe shoes, means upon the shoes and cooperating with the cam for holdingsaid shoes against lateral displacement relative to the cam, a pivotdevice engaged by the cam, a loose connection between said device andthe structure, and means for actuating the cam.

i. A brake including a supporting element, brake shoes loosely suspendedtherefrom, a spreading cam extending between the shoes, means upon theshoes and cooperating with the cam for holding the shoes against lateraldisplacement relative to the cam, and means for actuating the cam.

5. In a brake the combination with a supporting element, of brake shoesloosely suspended therefrom, a self-centering spreading cam interposedbetween the shoes, means upon said shoes and cooperating with the camfor supporting said cam and for preventing lateral displacement of theshoes relative to the cam, and means for actuating the cam.

In testimony that I claim the foregoing as my own, I have hereto affixedmy signature in the presence of two witnesses.

RILEY MCOLOSKEY.

\Vitnesses THOMAS J. C. MITCHELL, JAooB F. Hoor.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. 0.

